A Toyota 4×4 minibus displaying the letters WWFA drove along the rocky, uneven terrain of a rural road in the African nation of Malawi’s Thyolo District.  Suddenly, it came to a complete stop. Several passengers wearing purple and grey t-shirts sporting the same letters shown on the minibus—an acronym for the nonprofit Water Wells for Africa—got out to assess their next challenge: crossing a fragile wooden bridge that spans over a small ravine. It makes a creaking noise at the touch of one passenger’s foot. Another passenger surveyed the surface for any nails that might puncture the tires. “Wow, that looks fun,” said WWFA founder Kurt Dahlin before hopping back into the minibus with the team’s driver. He has been driving across bridges like these in Africa since starting the multi-national Redondo Beach-based organization in 1996. Just 30 feet below the bridge, a woman is undistracted by the visitors while …